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Finding the Fourth Proportional to 28,755.78, 43,130.82 and 9,033.81

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Solution

The fourth proportional to 28,755.78, 43,130.82 and 9,033.81 is: 13,549.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,755.78 : 43,130.82 = 9,033.81 : x
  2. Step 2: Convert to fraction form
    28,755.78/43,130.82 = 9,033.81/x
  3. Step 3: Cross multiply
    28,755.78x = 43,130.82 × 9,033.81
  4. Step 4: Simplify right side
    28,755.78x = 389,635,633.02
  5. Step 5: Solve for x
    x = 389,635,633.02/28,755.78
  6. Step 6: Final answer
    x = 13,549.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.